From efb0a239c4aaee370d97caf216859a724d7f72bd Mon Sep 17 00:00:00 2001
From: Jacob McDonnell <jacob@jacobmcdonnell.com>
Date: Sun, 15 Mar 2026 20:03:26 -0400
Subject: feat: Parsing modifiers and directives

Support added for parsing a limited set of directives and for all access
modifiers.
---
 src/parser.y | 80 ++++++++++++++++++++++++++++++++++++++++++++++++------------
 1 file changed, 64 insertions(+), 16 deletions(-)

(limited to 'src/parser.y')

diff --git a/src/parser.y b/src/parser.y
index e63935a..5f7b4bb 100644
--- a/src/parser.y
+++ b/src/parser.y
@@ -14,20 +14,22 @@ void yyerror(const char *s);
 
 %union {
     int i_val;
-    float f_val;
     char *s_val;
     char *symbol;
+    char *modifier;
+    char *directive;
 }
 
-%token <i_val> T_INTEGER
-%token <f_val> T_FLOAT
-%token <s_val> T_STRING
-%token <symbol> T_SYMBOL
-%token <symbol> T_INSTRUCTION
-%token T_ENDL
-%token T_COMMA
-%token T_OPENPAREN
-%token T_CLOSEPAREN
+%token <i_val>     T_INTEGER
+%token <s_val>     T_STRING
+%token <symbol>    T_SYMBOL
+%token <directive> T_DIRECTIVE
+%token <symbol>    T_LABEL
+%token <modifier>  T_MODIFIER
+%token             T_ENDL
+%token             T_COMMA
+%token             T_OPENPAREN
+%token             T_CLOSEPAREN
 %%
 asm:
     statements
@@ -39,48 +41,94 @@ statements:
     ;
 
 statement:
-    instructions
+    label
+    | directives
+    | instructions
     | T_ENDL
     ;
 
+label:
+    T_LABEL T_ENDL
+    {
+        printf("Found Label: %s\n", $1);
+    };
+
 instructions:
     rb_type
     | i_type
     | s_type
     | u_type
     | j_type
+    | i_type_modifier
+    | s_type_modifier
+    | pseudo_type
     ;
 
 rb_type:
-    T_INSTRUCTION T_SYMBOL T_COMMA T_SYMBOL T_COMMA T_SYMBOL T_ENDL
+    T_SYMBOL T_SYMBOL T_COMMA T_SYMBOL T_COMMA T_SYMBOL T_ENDL
     {
         printf("Read instruction: %s(%s, %s, %s)\n", $1, $2, $4, $6);
     };
 
 i_type:
-    T_INSTRUCTION T_SYMBOL T_COMMA T_SYMBOL T_COMMA T_INTEGER T_ENDL
+    T_SYMBOL T_SYMBOL T_COMMA T_SYMBOL T_COMMA T_INTEGER T_ENDL
     {
         printf("Read instruction: %s(%s, %s, %d)\n", $1, $2, $4, $6);
     };
 
+i_type_modifier:
+    T_SYMBOL T_SYMBOL T_COMMA T_SYMBOL T_COMMA T_MODIFIER T_OPENPAREN T_SYMBOL T_CLOSEPAREN T_ENDL
+    {
+        printf("Read instruction: %s(%s, %s, %s of %s)\n", $1, $2, $4, $6, $8);
+    };
+
 s_type:
-    T_INSTRUCTION T_SYMBOL T_COMMA T_INTEGER T_OPENPAREN T_SYMBOL T_CLOSEPAREN T_ENDL
+    T_SYMBOL T_SYMBOL T_COMMA T_INTEGER T_OPENPAREN T_SYMBOL T_CLOSEPAREN T_ENDL
     {
         printf("Read instruction: %s(%s, %s + %d)\n", $1, $2, $6, $4);
     };
 
+s_type_modifier:
+    T_SYMBOL T_SYMBOL T_COMMA T_MODIFIER T_OPENPAREN T_SYMBOL T_CLOSEPAREN T_ENDL
+    {
+        printf("Read instruction: %s(%s, %s of %s)\n", $1, $2, $4, $6);
+    };
+
 u_type:
-    T_INSTRUCTION T_SYMBOL T_COMMA T_INTEGER T_ENDL
+    T_SYMBOL T_SYMBOL T_COMMA T_INTEGER T_ENDL
     {
         printf("Read instruction: %s(%s, %d)\n", $1, $2, $4);
     };
 
 j_type:
-    T_INSTRUCTION T_SYMBOL T_COMMA T_SYMBOL T_ENDL
+    T_SYMBOL T_SYMBOL T_COMMA T_SYMBOL T_ENDL
     {
         printf("Read instruction: %s(%s, %s)\n", $1, $2, $4);
     };
 
+pseudo_type:
+    T_SYMBOL T_SYMBOL T_ENDL
+    {
+        printf("Read Pseudo Instruction: %s(%s)\n", $1, $2);
+    };
+
+directives:
+    directive_int
+    | directive_string
+    ;
+
+directive_int:
+    T_DIRECTIVE T_INTEGER T_ENDL
+    {
+        printf("Read directive %s %d\n", $1, $2);
+    };
+
+directive_string:
+    T_DIRECTIVE T_STRING T_ENDL
+    {
+        printf("Read directive %s %s\n", $1, $2);
+    };
+
 %%
 
 void yyerror(const char *s) {
-- 
cgit v1.2.3